DE3478717D1 - Apparatus for measuring the temperature and other parameters of an electric power conductor - Google Patents
Apparatus for measuring the temperature and other parameters of an electric power conductorInfo
- Publication number
- DE3478717D1 DE3478717D1 DE8484302500T DE3478717T DE3478717D1 DE 3478717 D1 DE3478717 D1 DE 3478717D1 DE 8484302500 T DE8484302500 T DE 8484302500T DE 3478717 T DE3478717 T DE 3478717T DE 3478717 D1 DE3478717 D1 DE 3478717D1
- Authority
- DE
- Germany
- Prior art keywords
- parameters
- measuring
- temperature
- electric power
- power conductor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/024—Means for indicating or recording specially adapted for thermometers for remote indication
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
- G01K1/143—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations for measuring surface temperatures
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/142—Arrangements for simultaneous measurements of several parameters employing techniques covered by groups G01R15/14 - G01R15/26
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00022—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/30—State monitoring, e.g. fault, temperature monitoring, insulator monitoring, corona discharge
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/484,681 US4689752A (en) | 1983-04-13 | 1983-04-13 | System and apparatus for monitoring and control of a bulk electric power delivery system |
US06/564,924 US4635055A (en) | 1983-04-13 | 1983-12-23 | Apparatus for measuring the temperature and other parameters of an electic power conductor |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3478717D1 true DE3478717D1 (en) | 1989-07-20 |
Family
ID=27048093
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8484302500T Expired DE3478717D1 (en) | 1983-04-13 | 1984-04-12 | Apparatus for measuring the temperature and other parameters of an electric power conductor |
Country Status (4)
Country | Link |
---|---|
US (1) | US4635055A (en) |
EP (1) | EP0125050B1 (en) |
CA (1) | CA1251260A (en) |
DE (1) | DE3478717D1 (en) |
Families Citing this family (81)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4723220A (en) * | 1983-04-13 | 1988-02-02 | Niagara Mohawk Power Corporation | Apparatus for power measuring and calculating Fourier components of power line parameters |
US4829298A (en) * | 1983-04-13 | 1989-05-09 | Fernandes Roosevelt A | Electrical power line monitoring systems, including harmonic value measurements and relaying communications |
US4808917A (en) * | 1983-04-13 | 1989-02-28 | Niagara Mohawk Power Corporation | Transmission line sensor apparatus operable with near zero current line conditions |
US4794327A (en) * | 1983-04-13 | 1988-12-27 | Fernandes Roosevelt A | Electrical parameter sensing module for mounting on and removal from an energized high voltage power conductor |
US4827272A (en) * | 1984-06-04 | 1989-05-02 | Davis Murray W | Overhead power line clamp and antenna |
US4728887A (en) * | 1984-06-22 | 1988-03-01 | Davis Murray W | System for rating electric power transmission lines and equipment |
US4806855A (en) * | 1984-06-22 | 1989-02-21 | Davis Murray W | System for rating electric power transmission lines and equipment |
US5140257A (en) * | 1984-06-22 | 1992-08-18 | Davis Murray W | System for rating electric power transmission lines and equipment |
CA1265844A (en) * | 1984-11-08 | 1990-02-13 | William Reid Smith-Vaniz | Line mounted apparatus for measuring line potential |
US4886980A (en) * | 1985-11-05 | 1989-12-12 | Niagara Mohawk Power Corporation | Transmission line sensor apparatus operable with near zero current line conditions |
GB8603781D0 (en) * | 1986-02-15 | 1986-03-19 | Pilkington Brothers Plc | Current probe |
JPH0727788Y2 (en) * | 1986-05-23 | 1995-06-21 | 住友電気工業株式会社 | Monitoring equipment for overhead power transmission and distribution equipment |
US4801937A (en) * | 1986-06-16 | 1989-01-31 | Fernandes Roosevelt A | Line mounted apparatus for remote measurement of power system or environmental parameters beyond line-of-site distanc |
US4831327A (en) * | 1987-05-01 | 1989-05-16 | Hydro-Quebec | Self-powered electrical measuring system isolated from electrical perturbances |
US4839645A (en) * | 1987-08-06 | 1989-06-13 | Lill Thomas M | Weather data transmitting system |
US4847780A (en) * | 1987-08-21 | 1989-07-11 | Tennessee Valley Public Power Association | Current measuring apparatus |
US4818990A (en) * | 1987-09-11 | 1989-04-04 | Fernandes Roosevelt A | Monitoring system for power lines and right-of-way using remotely piloted drone |
US4904996A (en) * | 1988-01-19 | 1990-02-27 | Fernandes Roosevelt A | Line-mounted, movable, power line monitoring system |
JPH04504794A (en) * | 1989-04-28 | 1992-08-20 | ソフテル,インコーポレイテッド | Method and apparatus for remotely controlling and monitoring the use of computer software |
CA2053261A1 (en) * | 1989-04-28 | 1990-10-29 | Gary D. Hornbuckle | Method and apparatus for remotely controlling and monitoring the use of computer software |
JPH0833328B2 (en) * | 1989-08-19 | 1996-03-29 | 泰久 野村 | Temperature detector |
US5211476A (en) * | 1991-03-04 | 1993-05-18 | Allflex Europe S.A. | Temperature recording system |
IT1254692B (en) * | 1992-04-14 | 1995-09-28 | Whirlpool Italia | DEVICE TO DETECT THE TEMPERATURE OF CONTAINERS PLACED IN A REFRIGERATOR |
FR2695482B1 (en) * | 1992-09-10 | 1994-10-21 | Alsthom Gec | Measuring device using a Rogowski coil. |
GB2281123A (en) * | 1993-08-17 | 1995-02-22 | Thermocouple Instr Limited | Pipe temperature sensing assembly |
FR2717582B1 (en) * | 1994-03-21 | 1996-06-14 | Electricite De France | Device for measuring a voltage drop on a live conductor. |
US6167525A (en) * | 1997-02-26 | 2000-12-26 | Pirelli Cavi E Sistemi S.P.A. | Method and system for analysis of electric power transmission link status |
US6300871B1 (en) * | 1997-11-12 | 2001-10-09 | Headwaters Research & Development, Inc. | Multi-station RF thermometer and alarm system |
US6714000B2 (en) | 1999-06-14 | 2004-03-30 | Genscape, Inc. | Method for monitoring power and current flow |
US6601434B2 (en) * | 1999-12-02 | 2003-08-05 | Thermwood Corporation | System and method of calibrating a multi-toolhead machine |
CA2406444C (en) | 2000-04-13 | 2010-11-09 | Genscape, Inc. | Apparatus and method for the measurement and monitoring of electrical power generation and transmission |
US6998962B2 (en) * | 2000-04-14 | 2006-02-14 | Current Technologies, Llc | Power line communication apparatus and method of using the same |
WO2002054029A1 (en) * | 2000-12-27 | 2002-07-11 | Sanyo Electric Co., Ltd. | Temperature monitor for electro-mechanical part |
EP1371219A4 (en) * | 2001-02-14 | 2006-06-21 | Current Tech Llc | Data communication over a power line |
WO2002086641A1 (en) * | 2001-04-17 | 2002-10-31 | Sanyo Electric Co., Ltd. | Temperature monitoring device |
US6776522B2 (en) | 2002-10-09 | 2004-08-17 | Steven J. Syracuse | Apparatus and system for monitoring temperature of high voltage conductors |
DE10252869A1 (en) * | 2002-11-12 | 2004-05-27 | Pfalzwerke Ag | Voltage isolation test unit for multiple phase cables has sprung supported measurement electrodes in hinged semicircular ring clamped to insulation |
US7187275B2 (en) * | 2004-10-21 | 2007-03-06 | Mccollough Jr Norman D | Method and apparatus for a remote electric power line conductor faulted circuit current, conductor temperature, conductor potential and conductor strain monitoring and alarm system |
US7557563B2 (en) * | 2005-01-19 | 2009-07-07 | Power Measurement Ltd. | Current sensor assembly |
US7188997B2 (en) * | 2005-01-21 | 2007-03-13 | Eaton Corporation | Apparatus and method for detecting hot spots in an electric power conductor |
US7626497B2 (en) | 2005-05-25 | 2009-12-01 | Current Technologies, Llc | Power line communication vegetation management system and method |
US7468657B2 (en) * | 2006-01-30 | 2008-12-23 | Current Technologies, Llc | System and method for detecting noise source in a power line communications system |
US7795877B2 (en) * | 2006-11-02 | 2010-09-14 | Current Technologies, Llc | Power line communication and power distribution parameter measurement system and method |
US7884598B2 (en) * | 2007-08-30 | 2011-02-08 | Fluke Corporation | Clamp jaw assembly |
US7714592B2 (en) * | 2007-11-07 | 2010-05-11 | Current Technologies, Llc | System and method for determining the impedance of a medium voltage power line |
US20090289637A1 (en) * | 2007-11-07 | 2009-11-26 | Radtke William O | System and Method for Determining the Impedance of a Medium Voltage Power Line |
US8077049B2 (en) | 2008-01-20 | 2011-12-13 | Current Technologies, Llc | Method and apparatus for communicating power distribution event and location |
US8566046B2 (en) * | 2008-01-21 | 2013-10-22 | Current Technologies, Llc | System, device and method for determining power line equipment degradation |
US8163574B2 (en) * | 2009-05-08 | 2012-04-24 | Eaton Corporaton | System and method for sensing voltage in medium-to-high voltage applications |
US8872613B2 (en) * | 2009-07-30 | 2014-10-28 | Prysmian S.P.A. | Apparatus and method for generating electric energy in an electric power transmission system |
US9134344B2 (en) | 2009-10-28 | 2015-09-15 | Gridview Optical Solutions, Llc. | Optical sensor assembly for installation on a current carrying cable |
US8076925B2 (en) * | 2009-10-28 | 2011-12-13 | Optisense Network, Inc. | Optical sensor assembly for installation on a current carrying cable |
US8395372B2 (en) * | 2009-10-28 | 2013-03-12 | Optisense Network, Llc | Method for measuring current in an electric power distribution system |
US8374821B2 (en) | 2010-12-22 | 2013-02-12 | Utility Risk Management Corporation, Llc | Thermal powerline rating and clearance analysis using thermal imaging technology |
US8275570B2 (en) | 2011-03-02 | 2012-09-25 | Utility Risk Management Corporation, Llc | Thermal powerline rating and clearance analysis using local thermal sensor |
IN2014MN02306A (en) * | 2012-05-13 | 2015-08-07 | Grid2020 Inc | |
US9535097B2 (en) | 2012-07-19 | 2017-01-03 | Gridview Optical Solutions, Llc. | Electro-optic current sensor with high dynamic range and accuracy |
US9146358B2 (en) | 2013-07-16 | 2015-09-29 | Gridview Optical Solutions, Llc | Collimator holder for electro-optical sensor |
CN104048779B (en) * | 2014-05-30 | 2016-07-06 | 合肥京东方光电科技有限公司 | A kind of thermometric sample makes tool and making apparatus |
US9970759B2 (en) * | 2014-09-02 | 2018-05-15 | Electric Power Research Institute, Inc. | Sensor and method for identifying downed power transmission conductors and structures |
CN104406704A (en) * | 2014-11-28 | 2015-03-11 | 国家电网公司 | Temperature sensor and conducting wire temperature measuring system comprising same |
CN105241570A (en) * | 2015-11-03 | 2016-01-13 | 重庆通赛机电有限公司 | System for continuously monitoring temperature of exciting transformer |
CN105305440B (en) * | 2015-11-27 | 2018-07-31 | 华北电力大学 | The hyperbolic cosine type maximal index absolute value Robust filter method of POWER SYSTEM STATE |
WO2017107000A1 (en) | 2015-12-21 | 2017-06-29 | 3M Innovative Properties Company | Real-time temperature measurement for electrical conductors |
CN106093653B (en) * | 2016-07-08 | 2018-11-13 | 蓝龙飞 | A kind of electric system detection communication system |
KR102480383B1 (en) | 2017-02-16 | 2022-12-22 | 와틀로 일렉트릭 매뉴팩츄어링 컴파니 | Compact modular wireless sensor |
US10726582B2 (en) * | 2018-03-15 | 2020-07-28 | Sharper Shape Oy | Method and system for determining lone temperature of overhead power line |
CN108426644B (en) * | 2018-04-28 | 2020-09-25 | 广东电网有限责任公司 | Power cable temperature measuring device |
US11152152B2 (en) | 2018-12-03 | 2021-10-19 | Schweitzer Engineering Laboratories, Inc. | Fabrication process to produce a toroidal current transformer |
US10971295B2 (en) | 2018-12-03 | 2021-04-06 | Schweitzer Engineering Laboratories, Inc. | Two part clamping and suspension mechanism for a split toroidal current transformer |
US10978863B2 (en) | 2019-01-15 | 2021-04-13 | Schweitzer Engineering Laboratories, Inc. | Power line sag monitoring device |
US11143687B2 (en) | 2019-01-15 | 2021-10-12 | Schweitzer Engineering Laboratories, Inc. | Discharge event monitoring device |
US11038384B2 (en) | 2019-06-10 | 2021-06-15 | Schweitzer Engineering Laboratories, Inc. | Monitoring of power systems using unmanned vehicle |
US11211788B2 (en) | 2020-02-25 | 2021-12-28 | Schweitzer Engineering Laboratories, Inc. | Fire risk mitigation in electric power systems |
FI20205764A1 (en) * | 2020-07-21 | 2022-01-22 | Safegrid Oy | Apparatus and tool for a measurement coil |
EP4204821A4 (en) * | 2020-08-26 | 2024-11-06 | Georgia Tech Res Inst | Energy meters and energy monitoring systems and methods |
EP4001869A1 (en) * | 2020-11-11 | 2022-05-25 | Haltian Oy | Wireless apparatus for measuring temperature from an electrical conductor in an electrical substation of an electrical grid |
IL306012A (en) * | 2021-03-17 | 2023-11-01 | Advanced Fusion Systems Llc | Method and apparatus for protecting electrical components from a transient electromagnetic disturbance transmitted on parallel power lines |
US11662369B2 (en) | 2021-10-11 | 2023-05-30 | Schweitzer Engineering Laboratories, Inc. | Polymeric mounting suspension for a split core current transformer |
CN115165131B (en) * | 2022-06-24 | 2024-08-09 | 山东大学 | GIS isolating switch contact temperature monitoring device |
WO2024186611A1 (en) * | 2023-03-03 | 2024-09-12 | anyCOMM Holdings Corporation | Sensor system for remote surveillance of cable systems under tension |
Family Cites Families (15)
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---|---|---|---|---|
GB272289A (en) * | 1926-03-09 | 1927-06-09 | British Thomson Houston Co Ltd | Improvements in and relating to control equipment for alternating current power systems |
US3748655A (en) * | 1966-09-20 | 1973-07-24 | Anaconda Co | Temperature monitored cable system with telemetry read-out |
US3584299A (en) * | 1969-07-11 | 1971-06-08 | Sun Oil Co | Hook-on power factor, volt and ampere meter |
US3742764A (en) * | 1972-02-24 | 1973-07-03 | Canadian Patents Dev | Direct reading resistance thermometer |
US3824579A (en) * | 1972-12-26 | 1974-07-16 | Texas Instruments Inc | Apparatus for monitoring bearing temperature and for protecting bearing from overtemperature |
DE2363932C3 (en) * | 1973-12-20 | 1979-11-29 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Combined current and voltage measuring device |
US4158810A (en) * | 1974-10-21 | 1979-06-19 | Leskovar Silvin M | Telemetering post for measuring variables in a high-voltage overhead line |
US3984798A (en) * | 1974-11-21 | 1976-10-05 | International Telephone And Telegraph Corporation | Hotstick applicator for fault indicator cores |
DE2543828C2 (en) * | 1975-10-01 | 1982-09-23 | Hoechst Ag, 6000 Frankfurt | Device for the simultaneous measurement of direct current and alternating current |
US3978729A (en) * | 1975-12-09 | 1976-09-07 | The United States Of America As Represented By The United States Energy Research And Development Administration | Circuit for monitoring temperature of high-voltage equipment |
US4268818A (en) * | 1978-03-20 | 1981-05-19 | Murray W. Davis | Real-time parameter sensor-transmitter |
US4186368A (en) * | 1978-05-30 | 1980-01-29 | Tektronix, Inc. | Wide range, quick response temperature probe sensor |
US4347854A (en) * | 1979-10-15 | 1982-09-07 | Gosline Scott P | Bipolar temperature measuring apparatus |
US4324255A (en) * | 1980-03-07 | 1982-04-13 | Barach John P | Method and apparatus for measuring magnetic fields and electrical currents in biological and other systems |
US4384289A (en) * | 1981-01-23 | 1983-05-17 | General Electric Company | Transponder unit for measuring temperature and current on live transmission lines |
-
1983
- 1983-12-23 US US06/564,924 patent/US4635055A/en not_active Expired - Lifetime
-
1984
- 1984-04-12 CA CA000451832A patent/CA1251260A/en not_active Expired
- 1984-04-12 DE DE8484302500T patent/DE3478717D1/en not_active Expired
- 1984-04-12 EP EP84302500A patent/EP0125050B1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US4635055A (en) | 1987-01-06 |
CA1251260A (en) | 1989-03-14 |
EP0125050A1 (en) | 1984-11-14 |
EP0125050B1 (en) | 1989-06-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |